[Concerning accelerometer AR] It might be possible if it could measure it by intensity but I don't see that working flawlessly.
In all my attempts to get such things to work, I have failed. One of the big problems is that, unlike in theory, the Gravitational Force pulling down on the device is not always registered as a perfect 1. That means, unless you're not being very precise, it's hard to get exact tilt. And, a single accelerometer can only really register tilt and force (to a point), not position. AR works by interpreting what a device sees through its camera primarily, accelerometer secondarily. Relying on only accelerometer is pretty much a waste of time, sorry.
And besides, once you fell down a few stairs, you'd probably rather have touch/tilt input anyway.
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If it had a gps tracking chip or something similar you could prob do it; however, I don't see how it could be done just with the accelerometer.
It’s entirely possible. If there’s anything physics has taught me, it’s that an accelerometer measures acceleration, not angles relative to the ground. Obviously if the Zune is in constant motion the accelerometer won’t notice, no inertia based device can, but it can measure the acceleration and deceleration of your movements. One might argue that it’s not sensitive enough for this but I’ve found that it can pick up footsteps from across the room while on a table. To prove my point I made a video that showing the Zune can register acceleration and deceleration (as shown by the peaks and dips on the graph).
Even though I think its possible, it really isn't all that practical. As redwing partially explained.
Please read the original post and the post with the video. I'm not saying that the Zune would pick up your foot steps, thats retarded. I'm saying the the Zune would pick up the inertial changes of when you move forward or backward and turn.
When i said it could pick up the disturbance of my foot hitting the floor from across the room, it was merely to explain how sensitive the accelerometer was, not a viable input method.
In order for something like that to work correctly, you would need to hold the Zune perfectly level. Otherwise, the force of gravity would make the program think that you are moving even when it is only tilted slightly. Also, the amount of acceleration on the accelerometer would depend on how far away you hold the Zune away from you when you turn.